Paul Marcellin Berthier (1822-1912) Sicily. Etna, 1865. General view of Etna. Crater and volcanic rocks. Charred trees. Lava flow. Four (4) albumen prints from glass negatives, mounted on card. Photographer's dry stamp on mounts. Sizes: 23 x 37 to 26 x 39.5 cm In 1865, Paul Berthier traveled to Sicily with volcano specialist Ferdinand Fouqué to photograph Mount Etna, which erupted on January 28 of that year.